I'll lead off with some DA-TA -- as the scientists like to say.
Apparently being angry and hostile impairs lung capacity and can result in long term impariment of lung function.
BBC NEws wrote:
Scientists looked at men aged between 45 and 86 from the US Veterans Administration Normative Ageing Study.
The volunteers had had their levels of hostility measured in 1986 through a series of questionnaires, which indicated their longer term emotional state, the researchers said.
Their lung function was also measured and then analysed at routine intervals over an average period of just over eight years.
Dr Rosalind Wright of Harvard Medical School, who led the research, said: "The men with higher levels of hostility had lower lung function at this baseline point in 1986, but they also showed a more rapid rate of decline over time."
Other studies had shown that a rapid decline in
Thus, achieving calm temper by training should improve kokyu.